Comment 12 for bug 8136

1. installed new disk drive, and disconnected the old drive containing macosx.
2. Booted the ubuntu hoary preview installer (install-power4), using default
settings, reformatting the full drive.
3. After the first stage of the installation is over, it ejected the CD and
rebooted.
4. Then it starts up again, and shows a small menu stating it just loaded "stage
1" and
   asking if I want to boot GNU/Linux or CD. I hit 'l' for linux, and a small
time-glass-looking
   apple box shows up in the middle of the screen for a while, before it returns
to the same
   "boot gnu/linux or cd" menu. I'm unable to get past this menu.

So, no I didn't change any hardware during installation..

and here's a couple of links to others having the same problem:

  http://ubuntuforums.org/archive/index.php/t-13292.html
  http://www.ubuntuforums.org/showthread.php?t=17419 (just got an email from
Thomas Ferreira stating that he gave up after array4)